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United States Patent | 5,176,356 |
Lorbiecki ,   et al. | January 5, 1993 |
A seat suspension having a stationary support that can be mounted on a vehicle. An intermediate frame is mounted on the stationary support for vertical sliding movement relative thereto by a spring suspension. A seat support frame is mounted on the intermediate frame for upward or downward movement relative thereto. A ratchet assembly interconnects the seat support frame and the intermediate frame and includes ratchet members on one of the frames and a pawl member on the other of the frames. A pawl release, including a biasing spring and a pawl actuating member, is provided to allow the support frame to be moved from the lower to any intermediate upper position and create an impulse at each position without need to activate said activating member. The activating member is operative to selectively move the pawl to a nonengagement position.
Inventors: | Lorbiecki; James R. (Milwaukee, WI); Uecker; Ronald T. (Slinger, WI); Dahlbacka; Bruce B. (Port Washington, WI) |
Assignee: | Milsco Manufacturing Company (Milwaukee, WI) |
Appl. No.: | 798967 |
Filed: | November 27, 1991 |
Current U.S. Class: | 248/577; 248/157; 248/162.1; 248/409; 248/610; 297/307; 297/344.18 |
Intern'l Class: | F16M 013/00 |
Field of Search: | 248/157,297.3,576,577,581,162.1,407,408,409,610 297/345,307,308 |
1488300 | Mar., 1924 | Thompson | 248/297. |
1826643 | Oct., 1931 | Anderson | 248/297. |
3291525 | Dec., 1966 | Fritzmeier | 297/308. |
3326603 | Jun., 1967 | Lehner | 297/308. |
3572828 | Mar., 1971 | Lehner | 297/308. |
3705745 | Dec., 1972 | Ambrosius | 297/308. |
3861637 | Jan., 1975 | DeLongchamp. | |
3954298 | May., 1976 | Lowe | 297/308. |
4186963 | Feb., 1980 | Koutsky | 297/345. |
4662597 | May., 1987 | Uecker et al. | 297/307. |
4817908 | Apr., 1989 | Hanlon et al. | 248/581. |
4838514 | Jun., 1989 | Hill | 297/308. |